We can't really comment on this without knowing the title and trademark.
There are a lot of books being published whose names include or are the same as trademarks. There are a lot of trademarks that use exactly the same words as other trademarks, but relate to other areas of commerce.
Picking a phrase at random, let's say you wrote a book you wanted to call "White Rabbit" - there are a number of trademarks that use or include that term, but of itself that is irrelevant to your proposed title.
How long ago was the Trademark published? Those that have existed for a long time have much more strength. Otherwise, its about likelyhood of consumer confusion. On its face it doesn't seem that there would be much but you also haven't given us any details on what your book is about or what the title is. In addition, even if unrelated that doesn't mean they can't file an action against you. Even if they lose it is still going to cost you time and money. What is stopping you from changing the title?
The title is Vortex Man, and the guy trademarked it on May 26, 2011.
My book is fiction about a random guy who randomly encounters amazing adventures and obstacles but beats them in the end.
I really don't want to change the title, I've had it for years, I'm just really looking for a way to use it. Even if I have to buy the trademark him.
Is this you?
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No sir, not me.